System and method for preparing a beverage field and background

ABSTRACT

A system and method for preparing a consumable beverage. The system includes an apparatus including a first brew chamber part having a cavity for selectively holding an exchangeable first or second capsule. An exit area of the second capsule has a diameter that is larger than a diameter of an first exit area of the first capsule. The apparatus includes a second brew chamber part for closing the first brew chamber part around the first or second capsule. The second brew chamber part has an extraction plate for abutting against the first or second exit area. The extraction plate includes a central portion and a peripheral portion. The central portion is movable relative to the peripheral portion.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/NL2017/050513 filed Aug. 3, 2017, which claims the benefit of andpriority to Netherlands Patent Application No. NL 2017284 filed Aug. 3,2016, the entire contents of each of which are hereby incorporatedherein by reference.

BACKGROUND

The invention generally relates to a system for preparing a beverage.The invention also relates to an apparatus and method for preparing abeverage. More specifically the invention relates to a system forpreparing a beverage using a capsule.

Beverages such as coffee can be conveniently prepared in a brewingapparatus using a capsule with ingredients, e.g. ground coffee. Thecapsule may be designed for the purpose of producing a predeterminedamount of beverage. For example, a known amount of ingredients isprovided in the capsule which the apparatus will mix with a knownquantity of liquid, e.g. hot water. However, it may be desirable tosometimes provide a beverage with a different quantity than standard.Alternatively, or in addition, it may be desirable to increase theamount of ingredients, e.g. to get produce stronger coffee.Alternatively, or in addition, it may be desirable to provide adifferent type of beverage for which the amount and/or volume ofingredients may vary. To allow an increased amount of ingredients, thestandard size of a capsule may be insufficient and it may be desirableto provide a larger capsule. To keep options open with regards to theamount of ingredients, a brewing system may preferably allow differenttypes of capsules wherein the volume for storing ingredients isvariable.

For example, the international patent publication WO 2015/004613 A1describes a system for the preparation of beverages. The known systemcomprises capsules of at least a first type and a second type, havingoutwardly protruding transverse flanges, and respective different axiallengths. The known system comprises a brewing unit, in which there isdefined a variable-volume brewing chamber with a lateral delimiting partand a slidable end delimiting part, for receiving capsules of said typesintroduced into said chamber. The known system is characterized in thatthe capsules of said different types have flanges of correspondinglydifferent shapes, and said end delimiting part of the brewing chambercarries stop means adapted to be coupled to the flanges of saiddifferent types of capsules when the latter are introduced into thebrewing chamber, so as to allow correspondingly different relativemovements of the end delimiting part relative to the lateral delimitingpart of said chamber.

However, merely varying a shape of the flange may not provide efficientextraction of different amounts of fluid from different capsules.Furthermore, it may be undesirable to provide capsules with variation inshape. For example, some shapes may deteriorate a desired appearance ofthe capsules and make them difficult to handle. The use of irregularshapes may also add further effort to place the capsule more preciselyin the apparatus. There is a need for a brewing system that mayalleviate one or more disadvantages of the prior art while maintainingat least some of the advantages.

SUMMARY

According to one aspect, the present disclosure provides a system forpreparing a beverage suitable for (human) consumption. The systemcomprises an apparatus and may optionally include one or more types ofcorresponding capsules with ingredients that are specifically adapted tofit in the apparatus, and vice versa. The apparatus typically comprisesa brew chamber. The brew chamber as described herein is configured forreceiving a capsule with ingredients, e.g. ground coffee. For example,the capsule is pierced in the brew chamber to allow hot water beingmixed with ingredients for producing the beverage.

Preferably, the brew chamber comprises two or more parts that closearound the capsule to form the brew chamber. For example, a first brewchamber part comprises a cavity for holding an exchangeable capsulewhile a second brew chamber part may cooperate with the first brewchamber part, e.g. closing the first brew chamber part. The capsulestypically comprise a body with an exit area, e.g. an exit face throughwhich ingredients are to be extracted. One of the brew chamber parts mayhave an extraction plate for abutting against the exit area of thecapsule. The extraction plate may be configured for extracting thebeverage via the exit area of the capsule e.g. through holes in theextraction plate.

Preferably, the parts forming the brew chamber are adapted for handlingdifferent types of capsules, e.g. having different volumes for holdingingredients. Notably, the capsules may be different e.g. in that adiameter of the exit area is larger for one capsule compared to that ofanother capsule. Accordingly, the extraction plate may be configured tohandle extraction from capsules having a first diameter or having asecond (larger) diameter exit area. Thereto, the extraction plate mayinclude a central portion and a peripheral portion wherein the centralportion is movable relative to the peripheral portion, preferably in anaxial direction.

By providing the extraction plate with a central and peripheral portion,a size of the extraction plate may be adapted to a diameter of the exitarea of the capsule. For example, when the cavity holds a first capsulewith a relatively small (e.g. standard) diameter, the central portion ofthe extraction plate may abut the exit area while the peripheral portione.g. abuts against the first brew chamber part. Conversely, when thecavity holds a second capsule with a relatively large diameter, theperipheral portion of the extraction plate may abut against the secondexit area alternatively, or in addition to, the central portion. Forexample, a larger extraction surface may be provided which may enableless flow restriction.

In some embodiments, the extraction plate may be provided with one ormore apertures to allow beverage to pass there through. The aperturesmay be disposed for example in the central portion and preferably alsoin the peripheral portion. Alternatively, or in addition one or moreparts of the extraction plate may comprises one or more relief elementsto facilitate tearing of the exit area. For example pointed objects maybe used to perforate the exit area at one or more positions to extractthe liquid there through. The relief elements may also be combined withthe apertures, e.g. one or more relief elements may be retracted orextended through the apertures to pierce the exit area of the capsule.In some embodiments, the brew chamber parts may be moveable betweendifferent positions. The positions may be biased in a desired direction.For example, the first brew chamber part is movable between a firstposition and a second position, wherein the first brew chamber partincludes a first biasing member arranged for biasing a capsule towardsthe second brew chamber part. For example, the second brew chamber partis movable between a third position and a fourth position, wherein thesecond brew chamber part comprises a second biasing member arranged forbiasing the second brew chamber towards the first brew chamber part.Alternatively, or in addition a biasing member may be provided whichcontrol a biasing of the capsule towards the piercing plate, or viceversa. It will be appreciated that a piercing sequence may be controlledby setting a relative stiffness of the biasing members, e.g. to firstclose the brewing chamber before piercing the capsule, and/or onlypierce the capsule when adding the pressurized liquid.

Optionally, the cavity of the first brew chamber part is arranged forreceiving the first or second capsule. The cavity of the first brewchamber part can be a predetermined cavity arranged for holding thefirst or second capsule. The cavity can have an invariable shape forholding the first or second capsule. The first brew chamber part can bearranged for holding the first or second capsule without changing aconfiguration of the first brew chamber part. The first brew chamberpart can be a monolithic part.

Typically, the apparatus comprises an outlet from which the beveragewill flow after preparation. For example, liquid such as hot water mayflow through a hole pierced into the capsule via its bottom. The watercan mix, e.g. under pressure, with ingredients in the capsule. Theliquid with ingredients in the capsule may form the beverage which canbe extracted e.g. via the extraction plate. For example, liquid flowsfrom the capsule through the extraction plate to the beverage outlet ofthe apparatus. To provide liquid to the capsule, the apparatus maycomprises a fluid dispensing device. The fluid dispensing device may beconfigure to supply an amount of fluid, such as water, under pressure toa selected one of the exchangeable capsules, so as to press itsrespective exit area onto the relief elements, for opening therespective exit area. The amount of liquid may be adapted to the type,e.g. size, of capsule. Preferably, the extraction plate and the second(larger) exit area of the second capsule are adapted to each other suchthat a flow resistance of the second exit area when opened is less thana flow resistance of the first (smaller) exit area when opened.

In some embodiments, the central portion may be movable from a readyposition (receiving the capsule) to a first or second brewing positionwhich may be a different position depending on which capsule isreceived. Additionally, the central position may normally be biased inthe ready position which may be different from the first and secondbrewing positions. By allowing different positions of at least thecentral portion of the extraction plate, the system may be moreversatile to adapt also to different axial lengths of the capsule. Forexample, an axial length of the second capsule can be larger than anaxial length of the first capsule, e.g. to maintain the same or similardiameter to length ratio. Preferably, the capsules are substantiallyrotation symmetric around an axis extending from a bottom of the capsuleto a lid of the capsule. In this way it does not matter how the capsuleis placed in the brew chamber.

In some embodiments, the exit area of a respective capsule may berecessed further into the cavity when the cavity holds the first capsulethan when holding the second larger capsule. Accordingly, the centralportion may abut against the second exit area in the second brewingposition when the first and second brew chamber part are closed aroundthe second capsule. Alternatively, or in addition, the central portionmay abut against the first exit area in the first brewing position whenthe first and second brew chamber part are closed around the firstcapsule. By allowing the exit area of a respective capsule to berecessed at different depths, mechanisms at the rear end of the capsulemay need less adaptation. For example the mechanism for piercing thebottom of the capsule need not be adapted to different sized of thecapsule.

Some embodiments may be adapted such that the first capsule moves thecentral portion from the ready position to the first brewing positionwhile the second capsule moves the central portion from the readyposition to the second brewing position. For example, when the firstbrew chamber part is arranged for being moved towards the second brewchamber part, the first brew chamber part may push the first or secondcapsule against the central portion, e.g. wherein the central portion islocked at different positions. For example a different locking mechanismmay be mechanically triggered by a different diameter of the capsule.

In one embodiment, a locking mechanism may lock the central portion ofthe extraction plate in an extended first brewing position when thecavity holds the first capsule. Alternatively, or in addition, thelocking mechanism may be configured to release or bypass the lockingmechanism to provide the central portion of the extraction plate in asecond brewing position when the cavity holds the second capsule. Thelocking mechanism may also work reversely, e.g. locking in the secondposition while releasing in the first position. Also multiple lockingmechanisms may be provided to each lock at a different positiondepending on a diameter of the capsule exit surface. By changing thelocking position in dependence of a diameter, the same shape flange canbe used, e.g. the shape circular shape with different diameter

Optionally, an actuator may be provided for actuating the lockingmechanism, e.g. while closing the first brew chamber part against thesecond brew chamber part. In one embodiment, when closing the first brewchamber part against the second brew chamber part while holding thesecond capsule, the central portion may be pushed beyond the lockingmechanism by the second capsule before the locking mechanism is actuatedby the first brew chamber part. In a further embodiment, when closingthe first brew chamber part against the second brew chamber part whileholding the first capsule, the locking mechanism is actuated by thefirst brew chamber part before the central portion is pushed beyond thelocking mechanism by the first capsule. For example, the lockingmechanism includes a locker designed as a pivotable finger that can openor close the locking mechanism depending on the capsule diameter.

In some embodiments, the capsule has a flange-like rim around the exitarea. When using capsules with different diameter exit areas, thediameter of the flange-like rim may also be different. The cavity may beadapted to accept one, two, or more different diameter capsules. Theadaptation of the cavity may include e.g. abutment surfaces at different(axial) positions and/or with different diameters in the cavity. Forexample, the cavity may have a substantially annular first abutmentsurface arranged for abutting the flange-like first rim of the firstcapsule there against when the cavity holds the first capsule.Alternatively, or in addition, the cavity may a second abutment surfacearranged for abutting the rim of the second capsule (with largerdiameter) there against. For example, a substantially annular secondabutment surface is arranged at an open end of the cavity. The firstabutment surface may be spaced from the second abutment surface in anaxial direction of the first brew chamber part, e.g. recessed into thecavity further away from the open end. Preferably, first abutmentsurface and the second abutment surface are immobile relative to eachother. This may improve structural integrity.

In some embodiments, a sensor may be arranged for determining that thecentral part of the extraction plate passes a predetermined positionbetween an extended position and a retracted position. For example, thetype of capsule may be determined by measuring the position of thecentral part. Some parts of the system may be adapted in accordance withinformation about the type of capsule inserted in the brewing chamber.For example, a flow control unit may be arranged for controlling aparameter of fluid to be supplied to the capsule. In some cases, theflow control unit may be arranged to switch from operating in a firstmode to operating in a second mode when the sensor determines that thecentral extraction plate has passed the predetermined position betweenthe extended position and the retracted position.

In some embodiments, capsules have different sizes, e.g. the secondcapsule is larger than the first capsule. In some embodiments withdifferent sized capsules, the first brew chamber part includes a firstvolume not occupied by the first capsule when the cavity holds the firstcapsule, which first volume is arranged for holding part of the secondcapsule when the cavity holds the second capsule. Alternatively, or inaddition, the first brew chamber part includes a second volume notoccupied by the second capsule when the cavity holds the second capsule,which second volume is arranged for receiving the second brew chamberpart when the cavity holds the first capsule.

In some embodiments, the first brew chamber part and the first capsuleare adapted to each other such that a flange-like first rim of the firstcapsule engages an inner circumferential wall of cavity when loading thefirst capsule into the cavity. Alternatively, or in addition, the firstbrew chamber part and the second capsule are adapted to each other suchthat an outer part of the second capsule engages the innercircumferential wall of the cavity when loading the second capsule intothe cavity. It will thus be appreciated that the cavity may be adaptedfor specific capsules.

In some embodiments, the central portion includes a first sealing memberarranged for providing a fluid sealing engagement between the centralportion and the first brew chamber part when forming the brew chamberfor holding the first capsule. Alternatively, or in addition, theperipheral portion includes a second sealing member arranged forproviding a fluid sealing engagement between the peripheral portion andthe first brew chamber part when forming the brew chamber for holdingthe second capsule. This may allow different capsules to be adequatelysealed.

In other or further aspects of the present disclosure, the system asdescribed herein may be used in a method for preparing a consumablebeverage. For example, the method comprises providing an apparatusincluding a first brew chamber part having a cavity for selectivelyholding an exchangeable first or second capsule as described herein,e.g. with different sizes. During operation, the first brew chamber partmay be closed by engaging with a second brew chamber part. Preferablythe second brew chamber part has an extraction plate for abuttingagainst the exit area of a respective capsule. More preferably, theextraction plate includes a central portion and a peripheral portion,wherein the central portion is movable relative to the peripheralportion or vice versa.

In some embodiments, the first capsule is inserted in the apparatus andused for preparing the consumable beverage. In other or furtherembodiments, the second (larger) capsule is inserted in the apparatusand used for preparing the consumable beverage. The method ofpreparation may comprise e.g. supplying fluid under pressure to thecapsule in the brew chamber. Preferably, the exit area opens against theextraction plate. For example, a rise in pressure inside the capsulecauses the exit area to tear against relief elements provided on theextraction plate allowing beverage to exit the capsule.

According to an aspect is provided an apparatus of the system asdescribed herein.

According to an aspect is provided a capsule, and a set of a first andsecond capsule as described herein.

It will be appreciated that any of the embodiments, aspects, featuresand options described in view of the system apply equally to theapparatus, capsules and method. It will also be clear that any one ormore of the above embodiments, aspects, features and options can becombined.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will further be elucidated on the basis of exemplaryembodiments which are represented in a drawing. The exemplaryembodiments are given by way of non-limitative illustration. It is notedthat the figures are only schematic representations of embodiments ofthe invention that are given by way of non-limiting example.

In the drawings:

FIGS. 1A and 1B illustrate cross sectional views of a system forpreparing a beverage;

FIGS. 2A and 2B illustrate a perspective and partly translucent view,respectively, of a lever mechanism for closing a brew chamber;

FIGS. 3A and 3B illustrate cross sectional views of the functioning of alocking mechanism when a first capsule is inserted;

FIGS. 4A and 4B illustrate cross sectional views of the functioning of alocking mechanism when a second capsule is inserted;

FIGS. 5A-5C illustrate functioning of an arresting ring;

FIGS. 6A and 6B illustrate the presence of a first or second capsule inthe brew chamber during extraction;

FIGS. 7A and 7B illustrate how a first brew chamber part may swiveldownwardly to promote ejection of the a capsule;

FIGS. 8A and 8B illustrate a first or second capsule, respectively,inserted in the brew chamber.

DETAILED DESCRIPTION

FIGS. 1A and 1B show schematic cross sectional views of a system 1 forpreparing a beverage. The system includes an apparatus 2 and anexchangeable capsule. Here the system 1 is arranged for cooperating witha first capsule 4A and a second capsule 4B. The apparatus 2 shown inFIGS. 1A and 1B is one and the same apparatus. The apparatus 2 isarranged for selectively cooperating with either the first capsule 4A(see FIG. 1A) or the second capsule 4B (see FIG. 1B). It will beappreciated that the system 1 can include the apparatus 2, the firstcapsule 4A and the second capsule 4B.

The first and second capsules 4A, 4B are of a different type. In thisexample, the second capsule 4B is larger than the first capsule 4A. Anaxial length L_(B) of the second capsule 4B is larger than an axiallength L_(A) of the first capsule 4A. A diameter D_(B) of the secondcapsule 4B is a larger than a diameter D_(A) of the first capsule 4A.For example, the diameter D_(B) of the second capsule 4B is between 1.05and 2 times the diameter D_(A) of the first capsule 4B, preferablybetween 1.1 and 1.5 time D_(A), more preferably between 1.1 and 1.3times D_(A), e.g. D_(B)=1.2*D_(A) or about twenty percent larger.

Notwithstanding the differences, in this example the first and secondcapsules 4A, 4B are designed to make a similar visual impression. Thefirst and second capsules 4A, 4B are designed to have a familiar lookand feel. Here a ratio of the axial length and diameter L_(A)/D_(A) ofthe first capsule 4A is substantially the same as a ratio of the axiallength and diameter L_(B)/D_(B) of the second capsule 4B. Preferably,the length to diameter ratio of the first and second capsules isidentical within 20%, preferably within 10%, e.g. identical. It will beappreciated that providing an enlarged diameter (D_(B)>D_(A)), whilemaintaining the same or similar proportions (L_(A)/D_(A)˜L_(B)/D_(B))may result in an even larger volume for holding ingredients. Forexample, a twenty percent increased diameter may result in a volumeincrease of more than seventy percent (1.2{circumflex over ( )}3=1.728).

In view of the similarity, both capsules 4A, 4B will now be describedsimultaneously. In this example, the capsules 4A, 4B both include acup-shaped body 6A, 6B. Here the cup-shaped body 6A, 6B includes abottom 8A, 8B and a circumferential wall 10A, 10B. The bottom 8A, 8B andthe circumferential wall 10A, 10B can form a monolithic part. Thecapsules 4A, 4B both include a lid 12A, 12B. The lid 12A, 12B closes offan open end of the cup-shaped body 6A, 6B. The lid 12A, 12B includes anexit area exit area 13A, 13B, e.g. flat exit face, through whichbeverage can be drained from the capsule as explained below. In thisexample the lid 12A, 12B is connected to a flange-like rim 14A, 14B ofthe capsule 4A, 4B. Here the rim 14A, 14B is an outwardly extending rim.The bottom 8A, 8B, the circumferential wall 10A, 10B and the rim 14A,14B can form a monolithic part. Here the exit area 13A, 13B defines thearea of the lid 12A, 12B through which the beverage can potentially exitthe capsule 4A, 4B. Hence, an area of the lid 12A, 12B sealed to the rim14A, 14B does not constitute part of the exit area 13A, 13B. In thisexample, the capsules 4A, 4B are substantially rotation symmetric aroundan axis extending from the bottom 8A, 8B to the lid 12A, 12B. Thecup-shaped body 6A, 6B and the lid 12A, 12B enclose an inner space 16A,16B of the capsule. The inner space 16A, 16B includes a quantity ofbeverage ingredient, such as an extractable or soluble substance. Thebeverage ingredient can e.g. be roast and ground coffee, tea, or thelike. The beverage ingredient can be powdered coffee. The beverageingredient can be a liquid. In view of the difference in size of thecapsules 4A, 4B it will be appreciated that the second capsule 4B caninclude a larger quantity of beverage ingredient than the first capsule4A. In this example, the inner space 16B of the second capsule 4B isabout twice the inner space 16A of the first capsule 4A. For example,the first capsule 4A may include 4-8 grams, e.g. about 6 grams, ofground coffee. For example, the second capsule 4B may include 8-16grams, e.g. about 12 grams, of ground coffee.

The cup-shaped body 6A, 6B can be manufactured from a metal foil, suchas aluminium foil, a plastics material, such as polypropylene orpolyethylene, or a combination thereof. The cup-shaped body 6A, 6B canbe manufactured by pressing, deep-drawing, vacuum forming, injectionmoulding or the like. The lid can be manufactured from a metal foil,such as aluminium foil, a plastics material, such as polypropylene orpolyethylene, or a combination thereof. In the example the capsules 4A,4B are so-called closed capsules. This indicates capsules that arehermetically closed prior to insertion into the apparatus. The closedcapsules can be opened by the apparatus as described below.Alternatively, non-sealed or refillable capsules could also be used.

The apparatus includes a first brew chamber part 18 and a second brewchamber part 20. The first and second brew chamber parts 18, 20 can beclosed against each other to form a brew chamber 22A, 22B (not shown inFIGS. 1A, 1B).

The first brew chamber part 18 includes a cavity 24. The cavity 24 isarranged for receiving the first or second capsule 4A, 4B. Here thecavity 24 of the first brew chamber part 18 is a predetermined cavity 24arranged for holding the first or second capsule 4A, 4B. Here the cavity24 has an invariable shape for holding the first or second capsule 4A,4B. Here the first brew chamber part 18 is arranged for holding thefirst or second capsule 4A, 4B without changing a configuration of thefirst brew chamber part 18. In this example the first brew chamber part18 is a monolithic part. In this example the first brew chamber part 18includes a first abutment surface 26. The first abutment surface ispositioned inside the cavity 24. Here the first abutment surface 26 is afirst generally annular abutment surface. The first generally annularabutment surface 26 can be continuously annular, or it may beinterrupted annular, such as comprising a plurality of segments along anannulus. The first abutment surface 26 may for example take the shape ofone or more, e.g. arched, ridges which protrude into cavity 22. Here thefirst abutment surface 26 provides the cavity 22 with a stepped shape.In this example the first brew chamber part 18 includes a secondabutment surface 28. The second abutment surface is positioned near theopen end of the cavity 24. Here the second abutment surface 28 is asecond generally annular abutment surface. The second generally annularabutment surface 28 can be continuously annular, or it may beinterrupted annular, such as comprising a plurality of segments along anannulus. The second abutment surface 28 may for example take the shapeof one or more, e.g. arched, ridges. It will be appreciated that thefirst abutment surface 26 and the second abutment surface 28 are spacedat a mutual distance in an axial direction of the first brew chamberpart 18. The first abutment surface 26 and the second abutment surfaceare positioned at a fixed spacing. The first abutment surface 26 and thesecond abutment surface are immobile relative to each other. Here, thefirst brew chamber part 18 includes an ejector 38. In this example theejector 38 includes a conical ring and/or a resilient element 42, here ahelical spring. The first brew chamber part 18 includes piercing means44 for piercing the bottom of the capsule. Here the piercing meansincludes a plurality of knives, such as three knives.

The second brew chamber part 20 includes an extraction plate 30. In thisexample, the extraction plate 30 includes a central portion 32 and aperipheral portion 34. The central portion 32 is movable relative to theperipheral portion 34. Here the central portion 32 is movable in anaxial direction of the second brew chamber part 20.

The system 1 as describes thus far can be used for preparing a beverageas follows. Further features of the system 1 will be explained along theway.

In the example of FIGS. 1A and 1B the apparatus 2 is in a state readyfor receiving a capsule. In FIGS. 1A and 1B the capsule 4A, 4B has justbeen inserted into the cavity of the first brew chamber part 18. Thefirst brew chamber part 18 is in an inclined position. The open end ofthe cavity 24 points upwards.

As shown in FIG. 1A, the first capsule 4A can fall into the cavity 24under the influence of gravity. Herein the rim 14A of the first capsule4A is guided by an inner surface 36 of the first brew chamber part 18.The bottom 8A of the first capsule 4A lowers into the cavity 24 until itabuts against the ejector 38. Here the bottom 8A of the first capsule 4Acenters on the ejector 38. It will be appreciated that the rim 14A ofthe first capsule 4A is positioned between the first abutment surface 26and the second abutment surface 28. The bottom 8A of the first capsule4A is not yet pierced in this state.

As shown in FIG. 1B, the second capsule 4B can also fall into the cavity24 under the influence of gravity. Herein the circumferential wall 10Bof the second capsule 4B is guided by an inner surface 46 of the firstbrew chamber part 18. The bottom 8B of the second capsule 4B lowers intothe cavity 24 until it abuts against the ejector 38. Here the bottom 8Bof the second capsule 4B centres on the ejector 38. It will beappreciated that the rim 14B of the second capsule 4B is positionedbeyond the second abutment surface 28 when seen from the piercing means44. The bottom 8B of the second capsule 4B is not yet pierced in thisstate.

Once the capsule 4A, 4B is inserted into the cavity 24 as shown in FIGS.1A and 1B, the first brew chamber part 18 can be moved towards thesecond brew chamber part 20 for closing the brew chamber around thecapsule 4A, 4B. The first brew chamber part 18 is guided in a frame 48of the apparatus.

FIGS. 2A and 2B show an example wherein the first brew chamber part 18includes first bosses 50 and second bosses 52. The first bosses 50 areguided in a first groove 54 of the frame 48. The second bosses 52 areguided in a second groove 56 of the frame 48. It will be appreciatedthat the bosses 50, 52 and grooves 54, 56 determine the path that willbe followed by the first brew chamber part 18. Here the first groove 54and the second groove 56 are provided in a side wall 57 of the frame 48.The first groove 54 extends into the side wall 57 to a first depth. Thesecond groove 56 extends into the side wall to a second depth. Thesecond depth is larger than the first depth. The first boss 50 has alarger diameter than the second boss 52. The first groove 54 has alarger width than the second groove 56. The width of the first groove 54corresponds to the diameter of the first boss 50. The width of thesecond groove 56 corresponds to the width of the second boss 52. It willbe appreciated that the first groove 54 extends along a differenttrajectory than the second groove 56. The different widths and depths ofthe grooves allow the first and second bosses 50, 52 to follow differenttrajectories. This construction allows a very compact construction forguiding the first and second bosses 50, 52.

The apparatus 2 includes a lever 58. The lever can be actuated manuallyby a user. The lever is pivotally connected to the frame 48 around alever axis 60. The first brew chamber part 18 is connected to the frame48 via a knee joint 62. The knee joint 62 includes a push rod 64 and acrank 66. The push rod 64 is pivotally connected to the crank 66 at aknee axis 68. The crank 66 is pivotally connected to the frame 48 at acrank axis 70. The lever 58 is connected to the knee joint 62 foractuating the first brew chamber part 18 in motion. Here the lever 58 isconnected to the knee joint 62 through a lever link 74. The lever link74 is pivotally connected to the lever 58 at a lever link axis 76. Thelever link 74 is pivotally connected to the push rod 74 at a knee linkaxis 78.

An arresting ring 80 is arranged surrounding the first brew chamber part18. The arresting ring 80 is axially movable relative to the first brewchamber part 18. Here, the arresting ring 80 is guided by an externalsurface of the first brew chamber part 18. The arresting ring isconnected to the first brew chamber part via one or more resilientelements 82, here helical springs. The push rod is pivotally connectedto the arresting ring 80 at a push rod axis 72. Hence, here the kneejoint 62 is indirectly connected to the first brew chamber part 18, viz.via the arresting ring 80 and one or more resilient elements 82. Thefunction of the arresting ring will be set out below.

When the lever 58 is moved in a downward direction the knee joint 62will push the first brew chamber part 18 towards the second brew chamberpart 20. Simultaneously, due to the shape of the first and secondgrooves 54, 56, the first brew chamber part 18 will be rotated from theupwards inclined orientation into a an aligned orientation in which anaxial direction of the first brew chamber part 18 is aligned with anaxial direction of the second brew chamber part 20.

As mentioned above, the apparatus 2 is arranged for selectivelycooperating with either the first capsule 4A or the second capsule 4B.Here, the system 1 is arranged for automatically adjusting the brewchamber depending on whether the first or the second capsule has beeninserted. This provides the advantage that no user input is required forselecting proper handling of the first or second capsule. Hence, therisk of errors is greatly reduced.

As mentioned before, with reference to FIGS. 1A and 1B, the second brewchamber part 20 includes an extraction plate 30 with a central portion32 and a peripheral portion 34. Here the central portion 32 is movablein an axial direction of the second brew chamber part 20. The centralportion 32 in this example includes a shaft 32′ axially slidably movablewith respect to the frame 48. The central portion 32 is connected to theframe 48 via a resilient member 84, here a helical spring. The resilientmember 84 biases the central portion into a ready position in FIGS. 1Aand 1B. The ready position is an extended position in this example. Thecentral portion 32 can be positioned in a first brewing position forcooperating with the first capsule 4A. The central portion can bepositioned in a second brewing position for cooperating with the secondcapsule 4B. In this example, the system 1 includes a locking mechanism86 arranged for locking the central portion 32 in or near the firstbrewing position when the cavity 24 holds the first capsule 4A.

FIGS. 3A and 3B show an example wherein the locking mechanism 86includes a locker 88. Here the locker 88 is designed as a pivotablefinger, pivotable around a pivoting axis 90. The locker 88 is biasedinto a position pivoted away from the shaft 32′. The locker could alsobe biased into any other suitable position. The locking mechanism 86further includes a pusher 92. The pusher is slidably guided in a body 94of the second brew part 20. The pusher 92 is connected to the body 94via a resilient member 96, here a helical spring. The resilient member96 biases the pusher in an extended position. The first brew chamberpart 18 includes an actuator 98. Here the actuator is formed by afrontal surface of the first brew chamber part 18.

FIGS. 3A and 3B show functioning of the locking mechanism 86 when thecavity 24 holds the first capsule 4A. In this example, an outermost partof the first capsule 4A, here formed by the lid 12A, exit area 13Aand/or rim 14A, is positioned rearwards, i.e. more towards the piercingmeans 44, relative to the actuator 98. As a result, when advancing thefirst capsule 4A towards the second brew chamber part 20, the actuator98 will touch the pusher 92 before the outermost part of the firstcapsule 4A will touch the central portion 32. The pusher is pushedagainst the biasing force of the resilient member 96. A lip 100 of thepusher 92 will slide along a sloping surface 102 of the locker 88,causing the locker 88 to pivot towards the shaft 32′. As a result, athumb 104 of the locker 88 is placed in a path of movement of part 106of the central portion 32 (see FIG. 3B). When the first capsule 4A isadvanced further towards the second brew chamber part 20 the firstcapsule 4A will abut against the central portion 32. This can cause thecentral portion to be pushed against the biasing force of the resilientmember 84. The pivoted locker 88 prevents travel of the central portionbeyond a position where the part 106 abuts against the thumb 104. Thisis herein defined as the first brewing position. Hence, the firstcapsule 4A is arranged for moving the central portion 32 from the readyposition to the first brewing position. The first capsule 4A is heldbetween the first and second brew chamber parts 18, 20 while brewing,wherein the central portion 32 is in the first brewing position.

FIGS. 4A and 4B show functioning of the locking mechanism 86 when thecavity 24 holds the second capsule 4B. In this example, an outermostpart of the second capsule 4B, here formed by the lid 12B, exit area 13Band/or rim 14B, is positioned forwardly, i.e. more towards the secondbrew chamber part 20, relative to the actuator 98. As a result, whenadvancing the second capsule 4B towards the second brew chamber part 20,the outermost part of the second capsule 4B will abut against thecentral portion 32 before the actuator 98 will touch the pusher 92. Thecentral portion 32 is pushed against the biasing force of the resilientmember 84 while the locker 88 is still pivoted away from the shaft 32′.As a result, the part 106 passes underneath the thumb 104. Only afterthe part 106 has passed the thumb 104 the pusher is pushed against thebiasing force of the resilient member 96 by the actuator 98. The lip 100of the pusher 92 will still slide along the sloping surface 102 of thelocker 88, causing the locker 88 to pivot towards the shaft 32′.However, the part 106 has already passed the thumb 104 at that moment.In this example, the second capsule 4B pushes the central portion 32 inabutment with the body 94. This is herein defined as the second brewingposition. Hence, the second capsule 4B is arranged for moving thecentral portion 32 from the ready position to the second brewingposition. The second capsule 4B is held between the first and secondbrew chamber parts 18, 20 while brewing, wherein the central portion 32is in the second brewing position.

Thus, the locking mechanism 86 is arranged for locking the centralportion 32 in the first brewing position when the cavity 24 holds thefirst capsule 4A. It is noted that the locking may be single-sided, viz.the locking mechanism may prevent the central portion 32 from beingmoved beyond the first brewing position when the cavity 24 holds thefirst capsule 4A. However movement of the central portion 32 from thefirst brewing position to the ready position may be not prevented. Thelocking unit 86 is arranged for selectively preventing the centralportion 32 being locked in or near the first brewing position when thesecond capsule 4B is included in the brew chamber. The locking unit 86is arranged for selectively allowing the central portion 32 being movedinto the second brewing position when the second capsule is included inthe brew chamber.

When comparing FIGS. 3A and 4A it will be appreciated that whileadvancing the first brew chamber part 18 towards the second brew chamberpart 20 the first capsule 4A is recessed further into the first brewchamber part than the second capsule 4B. Then the first lid 12A, exitarea 13A and/or rim 14B is recessed further into the first brew chamberpart 18 than the second lid 12B, exit area 13B and/or rim 14B.

When comparing FIGS. 3B and 4B it will be appreciated that when the brewchamber holds the first capsule 4A, the central portion 32 extends intothe cavity 24. The central portion 32 extends into the first brewchamber part 18 beyond a position where the lid 12B, exit area 13Band/or rim 14B of the second capsule 4B would have been, had the secondcapsule been included in the first brew chamber part 18.

FIGS. 5A-5C demonstrate functioning of the arresting ring 80. Asmentioned above, the knee joint 62 is indirectly connected to the firstbrew chamber part 18, viz. via the arresting ring 80 and one or moreresilient elements 82.

In FIG. 5A the first capsule 4A abuts against the central portion 32with the central portion in the first brewing position. The arrestingring 80 is still in the rearward position. It will be appreciated thatthe lever 58 will not yet have reached its end position. The first brewchamber part 18 includes a protrusion 108. Here the protrusion 108 is asubstantially annular protrusion. The protrusion 108 extends outwardly.Here the protrusion 108 forms an outermost edge of the first brewchamber part 18. The second brew chamber part 20 includes a retainer110. Here the retainer 110 is designed as a circumferential ring ofretainer lips. The retainer 110 is pivotally connected to the body 94.Here the retainer 110 is resiliently pivotally connected to the body 94.The retainer 110 includes a tooth 112. The tooth here has a firstinclined surface 114 and a second inclined surface 116.

When lowering the lever 58, the arresting ring 80 will be advancedtowards the second brew chamber part 20. The one or more resilientelements 82 will push the first brew chamber part 18 ahead of thearresting ring 80 until the first brew chamber part abuts against thesecond brew chamber 20 part, e.g. with the capsule 4A, 4B clamped inbetween. During this movement, the protrusion 108 will advance againstthe first inclined surface 114. This causes the retainer 110 to bepivoted outwardly (see FIG. 5A). Further advancing causes the protrusion108 to pass beyond the second inclined surface 116, causing the retainer110 to pivot inwardly (see FIG. 5B). Further lowering of the lever 58first brew chamber part abuts against the second brew chamber 20 partwill cause the one or more resilient elements 82 to be compressed. As aresult, the arresting ring 80 will advance towards the second brewchamber part 20. Fully lowering the lever 58 will cause the arrestingring 80 to be interposed between the retainer 110 and a locking ring 118(see FIG. 5C). The arresting ring 80 surrounding the retainer 110prevents the retainer 110 from pivoting outwardly. Hence, the first brewchamber part is locked with respect to the second brew chamber part 20.The first brew chamber part is locked onto the second brew chamber part20.

The apparatus can include a fluid supply system for supplying a fluid,e.g. a liquid, such as hot water under pressure, to the first brewchamber part 18. When the brew chamber is pressurized with the fluid forbrewing a beverage, the first and second brew chamber parts 18, 20 willbe pushed away from each other by the fluid pressure. The retainer 110and arresting ring 80, and optionally the locking ring 118, will bearall, or part of, the force exerted by the fluid pressure. The arrestingring 80 interposed between the retainer 110 and the locking ring 118increases mechanical stability. The arresting ring 80 does not have tobear all forces exerted onto it by the retainer 110, since it can abutagainst the locking ring 118 and transmit at least part of the forces tothe locking ring 118. The locking ring 118 can be immobile, and hencecan easily be reinforced. Since the first brew chamber part is lockedonto the second brew chamber part 20 the frame 48 and the actuationmechanism, e.g. the knee joint, do not have to bear this force, or atleast a smaller part thereof. Hence the frame and/or the actuationmechanism can be designed weaker and/or cheaper.

Although the functioning of the arresting ring 80 has been shown inFIGS. 5A-5C with respect to the first capsule 4A, it will be appreciatedthat the arresting ring 80 can function identically with respect to thesecond capsule 4B.

FIG. 6A shows the first capsule 4A in the brew chamber duringextraction. FIG. 6B shows the second capsule 4B in the brew chamberduring extraction.

The piercing member 44 is arranged for piercing the bottom 8A, 8B of thecapsule 4A, 4B. As can also be seen in FIGS. 5A-5C, in this example thepiercing member 44 does not pierce the bottom 8A, 8B until the lid 12A,12B of the capsule 4A, 4B abuts against the central portion 32 in thefirst or second brewing position. Thereto, stiffnesses of the resilientelement 42 and the resilient member 84 can be chosen. In this example,the stiffness of the resilient element 42 is chosen to be larger thanthe stiffness of the resilient member 84. However, it will beappreciated that it is also possible that the stiffness of the resilientelement 42 is equal to the stiffness of the resilient member 84 or thatthe stiffness of the resilient element 42 is smaller than the stiffnessof the resilient member 84.

Once the capsule 4A, 4B is included in the brew chamber, and the bottom8A, 8B has been pierced, a fluid, in this example hot water underpressure, can be supplied to the brew chamber. Therefore it is desiredthat the brew chamber is leak tight. Thereto the central portion 32 isprovided with a first sealing member 120. The peripheral portion 34 isprovided with a second sealing member 122. The beverage preparationapparatus 2 is arranged for preparing a quantity of a beverage, suitablefor consumption, using either a first capsule 4A or a second capsule 4B.The quantity can be a predetermined quantity. The quantity can also be auser selectable, user settable, or user programmable quantity.

Referring to FIG. 3B sealing in view of the first capsule 4A isdescribed. The first sealing member 120 is arranged for providing afluid sealing engagement between the central portion 32 and the firstbrew chamber 18 part when forming the brew chamber for holding the firstcapsule 4A. In this example, the first sealing member 120 abuts againstthe first brew chamber part 18 when the first capsule 4A is included inthe brew chamber. This provides a seal for water being present in thecavity 24 outside the capsule 4A. This way, brewing fluid injected intothe brew chamber 22A is prevented from bypassing around the outside ofthe capsule 4A. In the example of FIG. 3B the first sealing member 120includes a resilient lip 121. The resilient lip 121 is arranged toprovide a self-reinforcing sealing engagement between the centralportion 32 and the first brew chamber part 18 under the effect of fluidpressure in the brew chamber. In this example the first sealing member120 abuts against the rim 14A of the first capsule 4A. The rim 14A ispressed against the first sealing member 120 by the first abutmentsurface 26. This provides a sealing engagement between the centralportion 32 and the capsule 4A against beverage exiting the capsule 4Avia the exit area 13A. It will be appreciated that here the side of therim 14A facing away from the cup-shaped body 6A is sealed against thesecond brew chamber part 20. Alternatively, or additionally, the side ofthe rim 14A facing towards the cup-shaped body 6A can be sealed againstthe first brew chamber part 18. Thereto an additional seal can beprovided on the first brew chamber part 18, e.g. on the first abutmentsurface 26, and/or on the capsule 4A, e.g. on the rim 14A. It will beclear that a seal on the capsule may be additional to the seal betweenthe first brew chamber part 18 and the second brew chamber part 20. Thismay reduce the sealing effort by the first sealing member 120.

Referring to FIG. 4B sealing in view of the second capsule 4B isdescribed. The second sealing member 122 is arranged for providing afluid sealing engagement between the peripheral portion 34 and the firstbrew chamber 18 part when forming the brew chamber for holding thesecond capsule 4B. In this example, the second sealing member 122 abutsagainst the first brew chamber part 18 when the second capsule 4B isincluded in the brew chamber. This provides a seal for water beingpresent in the cavity 24 outside the capsule 4B.

In the example of FIG. 3B the second sealing member 122 includes aresilient lip 123. The resilient lip 123 is arranged to provide aself-reinforcing sealing engagement between the peripheral portion 34and the first brew chamber part 18 under the effect of fluid pressure inthe brew chamber. In this example the second sealing member 122 abutsagainst the rim 14B of the second capsule 4B. The rim 14B is pressedagainst the second sealing member 122 by the second abutment surface 28.This may provide a sealing engagement between the peripheral portion 34and the capsule 4B against beverage exiting the capsule 4B via the exitarea 13B.

In FIG. 4B the first sealing member 120 provides a sealing engagementbetween the central portion 32 and the peripheral portion 34 whenforming the brew chamber for holding the second capsule 4B. This sealingengagement between the central portion 32 and the peripheral portion 34can be self-reinforcing. Thereto the engagement between peripheralportion 34 and the second capsule 4B may allow brewing fluid to pass tothe first sealing member 120. Hence, the first sealing member 120provides a sealing engagement between the central portion 32 and thecapsule 4B against beverage exiting the capsule 4B via the exit area13B. It will be appreciated that here the side of the rim 14B facingaway from the cup-shaped body 6B, which rim may or may not be covered bya lid, for example by a foil, is sealed against the second brew chamberpart 20. Alternatively, or additionally, the side of the rim 14B facingtowards the cup-shaped body 6B can be sealed against the first brewchamber part 18. Thereto an additional seal can be provided on the firstbrew chamber part 18, e.g. on the second abutment surface 28, and/or onthe capsule 4B, e.g. on the rim 14B. It will be clear that a seal on thecapsule may be additional to the seal between the first brew chamberpart 18 and the second brew chamber part 20. This may reduce the sealingeffort by the second sealing member 122.

When the fluid under pressure is supplied to the capsule 4A, 4B in thebrew chamber, the exit area 13A, 13B may open against the extractionplate 30. The extraction plate 30 in this example includes a pluralityof relief elements 124. Here the relief elements 124 are truncatedpyramids. A rise in pressure inside the capsule 4A, 4B can cause theexit area 13A, 13B to tear against the relief elements allowing beverageto exit the capsule 4A, 4B.

The beverage can pass through the extraction plate 30 via apertures inthe extraction plate. Next the beverage can flow to an outlet 126. Fromthe outlet 126 the beverage can flow into a receptacle, such as a cup.

Once the beverage has been brewed, the lever 58 can be moved upwardly.This causes the arresting ring 80 to be moved away from the retainer110. Next, the first brew chamber part 18 will be moved rearwards. Thesecond inclined surface 116 of the retainer 110 can allow the retainerto pass the projection 108. The first brew chamber 18 part will moveaway from the second brew chamber part 20. The central portion 32 willreturn to the ready position. The bosses 50, 52 and grooves 54, 56determine the path that will be followed by the first brew chamber part18.

FIGS. 7A and 7B illustrate how the first brew chamber part may swiveldownwardly. This promotes ejection of the used capsule 4A, 4B from thecavity 24 under the effect of gravity. The ejector 38 can assist inpushing the capsule 4A, 4B off the piercing member 44 and out of thecavity 24. The used capsule 4A, 4B can fall into a waste basket of theapparatus 2.

FIGS. 8A and 8B show examples how the capsule 4A or 4B can be insertedin the brew chamber. In this example the first and second capsules 4A,4B are designed to make a similar visual impression.

FIG. 8A shows an example of the first capsule 4A inserted in the brewchamber 22A formed by the first brew chamber part 18 and the second brewchamber part 20. It will be appreciated that the circumferential wall10A is narrower than the cavity 24 at that location. As a result thereis a first volume 126 surrounding the first capsule 4A inside the cavity24.

FIG. 8B shows an example of the second capsule 4B inserted in the brewchamber 22B formed by the first brew chamber part 18 and the second brewchamber part 20. It will be appreciated that a part 128 of thecircumferential wall 10B is narrower than the cavity 24 at thatlocation. This part 128 is formed by the part of the circumferentialwall 10B extending beyond the first abutment surface 26. As a resultthere is a second volume 130 surrounding the second capsule 4B insidethe cavity 24.

It is noted that the first volume 126 is not occupied by the firstcapsule 4A when the brew chamber holds the first capsule 4A. However,this first volume 126 is occupied by part of the second capsule 4B whenthe brew chamber holds the second capsule 4B. The second volume 130 isnot occupied by the second capsule 4B when the brew chamber holds thesecond capsule 4B. This second volume 130 receiving the central portion32 of the extraction plate 30 when the brew chamber holds the firstcapsule 4A.

When brewing a beverage using the first capsule 4A, the first volume 126will fill with fluid, such as water, which fluid is not used for brewingthe beverage. This fluid can be drained to the waste basket afterbrewing. When brewing a beverage using the second capsule 4B, the secondvolume 130 will fill with fluid, such as water, which fluid is not usedfor brewing the beverage. This fluid can be drained to a container, e.g.the waste basket, after brewing. In this example the first volume 126 issubstantially equal to the second volume 130. Hence, the volume of fluiddirected to the waste basket is substantially equal when brewing abeverage using a first capsule 4A and when brewing a beverage using asecond capsule 4B.

Herein, the invention is described with reference to specific examplesof embodiments of the invention. It will, however, be evident thatvarious modifications and changes may be made therein, without departingfrom the essence of the invention. For the purpose of clarity and aconcise description features are described herein as part of the same orseparate embodiments, however, alternative embodiments havingcombinations of all or some of the features described in these separateembodiments are also envisaged.

In the examples, the central portion of the extraction plate includes aplurality of relief elements. The peripheral portion includes no reliefelements. However, it will be appreciated that the peripheral portionmay also include relief elements. The extraction plate and the secondexit area can be adapted to each other such that a flow resistance ofthe second exit area when opened is less than a flow resistance of thefirst exit area when opened. The extraction plate and the second exitarea may be adapted to each other such that the second exit area tearson the extraction plate over a larger surface area than the first exitarea. The extraction plate and the second exit area may be adapted toeach other such that the second exit area tears on the extraction plateon more locations than the first exit area. Outer relief elements may bedesigned for tearing both the first and second exit area wherein thesecond exit area tears on the outer relief elements over a largersurface area than the first exit area. The extraction plate can includerelief elements of a first type and at least one relief element of asecond type, wherein the relief elements of the first type are arrangedwithin an area corresponding to the first exit area, and the at leastone relief element of the second type being arranged within an areacorresponding to the second exit area and outside the area correspondingto the first exit area. The relief element of the second type may have asharper edge than the relief elements of the first type. The second exitarea may include a weakened zone. The weakened zone may be located in aperipheral area of the second exit area.

In the examples, the first and second capsules have substantially thesame shape. It is also possible to provide a third capsule having adifferent shape. The third capsule can e.g. be shaped to substantiallyfill the brew chamber when the central portion is in the first brewingposition. It is also possible to provide a fourth capsule having adifferent shape. The fourth capsule can e.g. be shaped to substantiallyfill the brew chamber when the central portion is in the second brewingposition.

In the examples, the first capsule has an outwardly extendingflange-like rim. It will be appreciated that it is possible that thefirst capsule does not include an outwardly extending rim. In theexamples, the second capsule has an outwardly extending flange-like rim.It will be appreciated that it is possible that the second capsule doesnot include an outwardly extending rim.

In the examples, the capsule body and lid are made of aluminium foil,preferable polymer coated aluminium foil to allow easy welding of thelid to the body. It will be appreciated that the capsule body and/or lidcan be made of a wide variety of materials considered suitable by theskilled person and capable of being processed into a sheet, film or foilusing techniques conventionally known in the art such as extrusion,co-extrusion, injection molding, blow molding, vacuum forming etc.Suitable materials for the capsule body and/or lid include, withoutbeing limited thereto, plastic materials, in particular thermoplasticmaterials, for example a polyolefin polymer, for example polyethylene orpolypropylene, PVC, polyesters for example polyethylene terephthalate(PET); metal foils such as aluminum, stainless steel, metal alloys etc.;or sheets of a woven or a non-woven or otherwise processed fibrousmaterial, like paper, polyester, etc.; or combinations thereof, e.g.multilayers. The material for the capsule can be a biodegradable polymeror another biodegradable material. The skilled person will be capable ofselecting the appropriate material taking into account the envisaged usewith food material and any other relevant circumstances during use ofthe capsule. The thickness of the sheet or foil may be chosen such thata form stable capsule is provided. The thickness of the sheet or foilmay vary with the nature of the material.

In the examples, the capsules are closed capsules. It is also possibleto provide the system with an open capsule. The open capsule is openprior to insertion into the apparatus. The open capsule can bepreperforated. The open capsule can be packaged in a hermetically sealedpackage which has to be removed before inserting the open capsule in theapparatus. In the examples, the capsules are pierced by the piercingmeans. It is also possible to provide the system with a capsule that isnot pierced by the piercing means. Such capsule can e.g. include anentrance filter. In the examples, the capsules open against theextraction plate. It is also possible to provide the system with acapsule that does not open against the extraction plate. Such capsulecan e.g. include an exit filter.

In the examples, the capsules themselves do not include a sealingmember. It will be appreciated that it is possible to provide thecapsule with a sealing member, e.g. a resilient sealing member. Thesealing member can e.g. be placed on the rim, e.g. on the side facingtowards the cup-shaped body or on the side facing away from thecup-shaped body. Alternatively, or additionally, a sealing member can beprovided on the circumferential wall and/or on the bottom.

In the examples the arresting ring and retainer extend alongsubstantially the entire perimeter of the first and second brew chamberparts. This provides particular good locking of the two brew chamberparts onto each other. However, it will be appreciated that it is alsopossible that the arresting ring and retainer include arresting meansand retaining means at one or more discrete positions along theperimeter, e.g. at two, three, four, six or eight positions.

It will be appreciated that it is also possible to provide a firstapparatus arranged for brewing a beverage using a first capsule, butincapable of brewing a beverage using a second capsule. Such firstapparatus can be included in a system with the apparatus as described inrelation to the figures and a first capsule and optionally a secondcapsule.

It will be appreciated that it is also possible to provide a secondapparatus arranged for brewing a beverage using a second capsule, butincapable of brewing a beverage using a first capsule. Such secondapparatus can be included in a system with the apparatus as described inrelation to the figures and a second capsule and optionally a firstcapsule.

However, other modifications, variations, and alternatives are alsopossible. The specifications, drawings and examples are, accordingly, tobe regarded in an illustrative sense rather than in a restrictive sense.

For the purpose of clarity and a concise description features aredescribed herein as part of the same or separate embodiments, however,it will be appreciated that the scope of the invention may includeembodiments having combinations of all or some of the featuresdescribed.

In the claims, any reference signs placed between parentheses shall notbe construed as limiting the claim. The word ‘comprising’ does notexclude the presence of other features or steps than those listed in aclaim. Furthermore, the words ‘a’ and ‘an’ shall not be construed aslimited to ‘only one’, but instead are used to mean ‘at least one’, anddo not exclude a plurality. The mere fact that certain measures arerecited in mutually different claims does not indicate that acombination of these measures cannot be used to an advantage.

The invention claimed is:
 1. A system for preparing a consumablebeverage, the system comprising: an apparatus including a first brewchamber part having a cavity for selectively holding an exchangeablefirst capsule or an exchangeable second capsule, the first capsulehaving a first body with a first exit area attached to the first body,and the second capsule having a second body with a second exit areaattached to the second body, the second exit area having a diameter thatis larger than a diameter of the first exit area; the apparatus furtherincluding a second brew chamber part for closing the first brew chamberpart around the first or second capsule; wherein the second brew chamberpart has an extraction plate for abutting against the first or secondexit area, the extraction plate including a central portion and aperipheral portion, the central portion being movable relative to theperipheral portion.
 2. The system according to claim 1, wherein theperipheral portion is arranged to abut against the second exit area whenthe cavity holds the second capsule while brewing.
 3. The systemaccording to claim 1, wherein the peripheral portion is arranged to abutagainst the first brew chamber part when the cavity holds the firstcapsule while brewing.
 4. The system according to claim 1 wherein thecentral portion is movable from a ready position to a second brewingposition or to a first brewing position.
 5. The system according toclaim 4, wherein the central portion is biased in the ready position. 6.The system according to claim 4, wherein the central portion is arrangedto abut against the second exit area in the second brewing position whenthe first and second brew chamber part are closed around the secondcapsule.
 7. The system according to claim 4 wherein the central portionis arranged to abut against the first exit area in the first brewingposition when the first and second brew chamber part are closed aroundthe first capsule.
 8. The system according to claim 4, wherein thesecond capsule is arranged for moving the central portion from the readyposition to the second brewing position.
 9. The system according toclaim 4, wherein the first capsule is arranged for moving the centralportion from the ready position to the first brewing position.
 10. Thesystem according to claim 8, wherein the first brew chamber part isarranged for being moved towards the second brew chamber part, andwherein the first brew chamber part pushes the first or second capsuleagainst the central portion.
 11. The system according to claim 1,wherein an axial length of the second capsule is larger than an axiallength of the first capsule.
 12. The system according to any of thepreceding claims, wherein the first brew chamber part has asubstantially annular first abutment surface in the cavity wherein thefirst abutment surface is arranged for abutting a flange-like first rimof the first capsule there against when the cavity holds theexchangeable first capsule, and wherein the first brew chamber part hasa substantially annular second abutment surface, wherein the secondabutment surface is arranged for abutting a flange-like second rim ofthe second capsule there against when the cavity holds the exchangeablesecond capsule.
 13. The system according to claim 12, wherein thesubstantially annular first abutment surface and the substantiallyannular second abutment surface are immobile relative to each other. 14.The system according to claim 12, wherein the substantially annularfirst abutment surface is spaced from the substantially annular secondabutment surface in an axial direction of the first brew chamber part.15. The system according to claim 1, including a locking mechanism forlocking the central portion in an extended first brewing position whenthe cavity holds the first capsule.
 16. The system according to claim15, wherein the locking mechanism is configured for releasing thelocking of the central portion) of the extraction plate in a secondbrewing position when the cavity holds the second capsule.
 17. Thesystem according to claim 15, wherein the first brew chamber partincludes an actuator for actuating the locking mechanism.
 18. The systemaccording to claim 17, wherein the locking mechanism is actuated whileclosing the first brew chamber part against the second brew chamberpart.
 19. The system according to claim 15, wherein the system isarranged such that, while closing the first brew chamber part againstthe second brew chamber part, when the cavity holds the second capsule,the central portion is pushed beyond the locking mechanism by the secondcapsule before the locking mechanism is actuated by the first brewchamber part.
 20. The system according to claim 15, wherein the systemis arranged such that, while closing the first brew chamber part againstthe second brew chamber part, when the cavity holds the first capsule,the locking mechanism is actuated by the first brew chamber part beforethe central portion is pushed beyond the locking mechanism by the firstcapsule.
 21. The system according to claim 1, including a sensorarranged for determining that the central portion passes a predeterminedposition between an extended position and an retracted position, andincluding a flow control unit arranged for controlling a parameter offluid to be supplied to the respective first or second capsule, whereinthe flow control unit is arranged to switch from operating in a firstmode to operating in a second mode when the sensor determines that thecentral portion has passed the predetermined position between theextended position and the retracted position.
 22. The system accordingto claim 1, wherein the central portion includes a first sealing memberarranged for providing a fluid sealing engagement between the centralportion and the first brew chamber part when forming a brew chamber forholding the first capsule.
 23. The system according to claim 1, whereinthe peripheral portion includes a second sealing member arranged forproviding a fluid sealing engagement between the peripheral portion andthe first brew chamber part when forming a brew chamber for holding thesecond capsule.
 24. A method for preparing a consumable beverage, themethod comprising: providing an apparatus including a first brew chamberpart having a cavity for selectively holding an exchangeable first orsecond capsule, the first capsule having a first body with a first exitarea attached to the first body, and the second capsule having a secondbody with a second exit area attached to the second body, the secondexit area having a diameter that is larger than a diameter of the firstexit area; the apparatus further including a second brew chamber partfor closing the first brew chamber part around the first or secondcapsule; wherein the second brew chamber part has an extraction platefor abutting against the first or second exit area, the extraction plateincluding a central portion and a peripheral portion, the centralportion being axially movable relative to the peripheral portion.